I have no idea whatsoever if I chose my beliefs or how much control I have over my choices now. I believe I can choose, because I don’t like the alternative - and because I personally feel like I am choosing. What I feel most strongly is that I have made a conscious choice about HOW I reach conclusions - that I sit down, weigh my options, analyze what has brought me joy and decide to make decisions that will enhance and build on that joy. Perhaps that isn’t really a conscious choice; perhaps it simply is part of my inherited, genetic make-up. I don’t worry much about it, since it feels like conscious choice to me.
Having said that, I also believe that one of the greatest fallacies believed and taught by too many members (not by the Church or in the doctrine) is that all people experience the Spirit and construct belief in the same way. We tend to extrapolate the “burning in the bosom and stupor of thought” that was one person’s way of getting spiritual answers to all - which excludes me, since I don’t feel most of my impressions and answers that way. We tend to mis-read Moroni 10:3-5 and assume that ALL investigators and members who read and pray about the Book of Mormon will “know” (generally through a burning in the bosom) that it is true - which excludes many who have a desire to believe and would be wonderful members of the Church but who never join because we tell them they can and should “know” in the same way we know. When we insist that everyone can know, and that they should know, we literally are killing faith.
I understand the tendency to want to see clearly, in black and white. I just don’t like it, because it excludes many people and puts unrealistic expectations on many other people - people who could find great joy and add great worth to the Church without those expectations.
My own summary: Who cares “how” someone comes to believe and/or accept and/or follow? It doesn't matter to me if someone can say, “I know” - or just “I believe” - or just “I want to believe; strengthen my unbelief.” I believe it’s much more complicated for myself than I personally understand, so as long as someone is willing to worship with me, I don’t worry how they got there. I just care that they got there. I’ll let the Lord sort out how much control we all have over our choices, believing that such a determination will be merciful in the end.